What is the term for the flat, gently sloping surface composed of alluvium that forms along the base of mountain ranges in arid or semi-arid regions through the merging of multiple alluvial fans?

💡 Solution & Explanation

A bajada is a continuous, gently sloping depositional surface formed along the base of a mountain range in arid or semi-arid environments through the lateral coalescence of multiple individual alluvial fans. A playa designates the dry, flat-bottomed ephemeral lake bed situated at the lowest point of an enclosed desert basin. Barchans are crescent-shaped sand dunes formed by unidirectional winds, whereas drumlins are elongated hills composed of glacial till. Geomorphological depositional landforms in arid terrains are frequently tested in physical geography.